           (edn-response {:ok true}))
       (error-response 400 :no-such-email)))
 
-  ; accept an email invite to join a group
+  ;; accept an email invite to join a group
   (POST "/register" [token invite_id email now hmac :as req]
     (let [fail {:status 400 :headers {"Content-Type" "text/plain"}}]
       (cond

        (error-response 401 "Group is private"))
      (error-response 404 "No group with that id found")))

  ; log in
  (PUT "/session" [email password :as req]
    (if-let [user-id (when (and email password)
                       (user/authenticate-user email password))]

             :session (assoc (req :session) :user-id (user :id))})))
      (error-response 500 "Couldn't exchange token with github")))

  ;; register a user
  (PUT "/users" [email password :as req]
    (cond
      (string/blank? email)
